After analyzing retention data across dozens of titles, Day 7 retention is the strongest predictor of long-term success. Industry averages sit at around 10-20% Day 7 retention, but top performers reach 30-40%. What's fascinating is the drop-off pattern: Day 1 to Day 2 sees 30-40% loss, then it stabilizes. Players who return on Day 7 have a 60% chance of still playing at Day 30. This creates a critical window for engagement mechanics. Push notifications sent between days 3-5 can boost Day 7 retention by 15-25%, but timing and content matter enormously. Generic reminders perform worse than personalized milestone notifications. I'm curious about cohort-specific retention strategies - has anyone successfully tailored onboarding based on player acquisition source? What retention benchmarks are you seeing in your genre?